As happy as this Shell of a man is he is held down by gravity. Everything is affected by gravity. Trajectory flying driving all of that. The way that Gravity effects us is well it keeps us to the ground. But it affects more then you think. In the Film it shows how gravity affects everything. trajectory when a bullet is shot over time the bullet drops and or rotates down. This is caused by gravity. Gravity on earth is 9.8 m/s. It will always affect us.